TOUCH SCREEN DEVICE AND DISPLAY DEVICE USING THREE-DIMENSIONAL POSITION INFORMATION

The touch screen apparatus according to the invention includes: a first frame having a plurality of optical transmission units arranged in a row along a first direction and stacked in a third direction orthogonal to the first direction; a second frame facing the first frame and having a plurality of optical reception units arranged in a row along the first direction and stacked in the third direction; and a control unit connected to the first frame and the second frame for controlling the plurality of optical transmission units and the plurality of optical reception units to be operated, and detecting a touch position in a three-dimensional space by using a signal detected at the plurality of optical reception units.